18 Questions
Which type of RNA carries information that specifies a particular protein?
Messenger RNA (mRNA)
What differentiates mRNA molecules called transcripts in differentiated cells?
Specific amino acid sequence
Which type of RNA provides structural support by associating with proteins to form ribosomes?
Ribosomal RNA (rRNA)
What is the function of transfer RNA (tRNA) during protein synthesis?
Binding mRNA codon and specific amino acid
Which type of RNA consists of two subunits that join during protein synthesis?
Ribosomal RNA (rRNA)
What characteristic differentiates mRNA bases from other types of RNA?
Formation of codons for amino acids
Which nitrogenous base is classified as a purine?
Guanine
In DNA, which carbon of the deoxyribose sugar is attached to the 3' carbon of the previous nucleotide?
5'
What type of bond forms between deoxyribose sugars and phosphates in DNA?
Phosphodiester bond
Which nitrogenous base is classified as a pyrimidine?
Thymine
What is the term used to describe the specific pairing of purines and pyrimidines in DNA?
Complementarity
Which two carbons in the deoxyribose sugar are considered most important in DNA structure?
'3 and '5
What is the pairing between Adenine (A) and Thymine (T) an example of?
Base pairing
Which protein is responsible for forming frameworks that guide DNA strands?
Scaffold proteins
What percentage of DNA is composed of histone proteins?
30%
What brings together parts of the DNA sequence within the same long DNA sequence to form a 'loop-ome' structure?
CTCF protein
Which molecule acts as a bridge between genes and proteins?
Ribonucleic acid (RNA)
What is the term used for DNA coiled around a histone protein in chromatin?
Nucleosome
This quiz covers the difference between RNA and DNA, focusing on the three major types of RNA: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). Learn about the characteristics and functions of each RNA type in gene expression.
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